125989650 has 36 divisors (see below), whose sum is σ = 338493402. Its totient is φ = 33597120.

The previous prime is 125989649. The next prime is 125989667. The reversal of 125989650 is 56989521.

125989650 is a `hidden beast` number, since 1 + 2 + 598 + 9 + 6 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 99022401 + 26967249 = 9951^2 + 5193^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 125989596 and 125989605.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139539 + ... + 140438.

Almost surely, 2^125989650 is an apocalyptic number.

125989650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125989650 is an abundant number, since it is smaller than the sum of its proper divisors (212503752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125989650 is a wasteful number, since it uses less digits than its factorization.

125989650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279995 (or 279987 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 125989650 is about 11224.5111252116. The cubic root of 125989650 is about 501.3160662334.

It can be divided in two parts, 1259 and 89650, that added together give a palindrome (90909).

The spelling of 125989650 in words is "one hundred twenty-five million, nine hundred eighty-nine thousand, six hundred fifty".